12023040 has 144 divisors (see below), whose sum is σ = 40029696. Its totient is φ = 3072000.

The previous prime is 12023021. The next prime is 12023051. The reversal of 12023040 is 4032021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118990 + ... + 119090.

It is an arithmetic number, because the mean of its divisors is an integer number (277984).

Almost surely, 2^12023040 is an apocalyptic number.

12023040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12023040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20014848).

12023040 is an abundant number, since it is smaller than the sum of its proper divisors (28006656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12023040 is a wasteful number, since it uses less digits than its factorization.

12023040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 12023040 is about 3467.4255579608. The cubic root of 12023040 is about 229.0892782586.

Adding to 12023040 its reverse (4032021), we get a palindrome (16055061).

The spelling of 12023040 in words is "twelve million, twenty-three thousand, forty".